hi
here: 0-250g $10 max:$100 will the $10 be a flat rate added or a mulitplier. I think there should be two values to each rule. one a muliplier amount for example $1 for each g, and another a flat rate to add for the range.

In addition, there should be a option to select either one, non of them or both. that way we can control exactly the value according to the shipping company.

as for the weight scale issue, I think in the store settings you define what scale you'll be working in (pounds, grams, etc). so I think you shouldn't address it at all and simply count on the user entering the weight value according to the scale the store is set up in.

about the = sign. it's running the function uc_taxes_match_area() and returning a true/false value to $rate, it's tot a comparer. so basicly the if statement checks if both $rate, and eval($conditions) are true....I think!

Idan